The following lots of Commodity z were available for sale during the year Beginning Inventory 10 units at $52 First purchase 16 units at $ Second purchase 20 units at $55 Third purchase 17 units at 560 The firm uses the periodic system, and there are 22 units of the commodity on hand at the end of the year what is the ending inventory balance at the end of the year according to the ro method? Oc 13:44 d. 31.450